Abstract
The surface tension of liquid Fe-Cr-O alloys has been determined by using the sessile drop method at 1823 K. It was found that the surface tension of liquid Fe-Cr-O alloy markedly decreases with oxygen content at constant chromium content, and the surface tension at a given oxygen content remains almost constant, regardless of the chromium content. When the surface tension of liquid Fe-Cr-O alloys is plotted as a function of oxygen activity, with an increase in the chromium content, the surface tension shows a much steeper decrease with respect to oxygen activity. The surface tension of liquid Fe-Cr-O alloys at 1823 K is given as follows: σ = 1842 - 279 In (1 + K OU O). Here, assuming a Langmuir-type adsorption isotherm, the adsorption coefficient of oxygen, K O(Fe-Cr), as a function of chromium content, was shown to be K O = 140 + 4.2 × [wt pet Cr] + 1.14 × [wt pet Cr] 2.
| Original language | English |
|---|---|
| Pages (from-to) | 241-246 |
| Number of pages | 6 |
| Journal | Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science |
| Volume | 36 |
| Issue number | 2 |
| Publication status | Published - 2005 Apr 1 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Materials Science(all)
- Metals and Alloys
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Surface tension of liquid Fe-Cr-O alloys at 1823 K. / Lee, Joonho; Yamamoto, Koji; Morita, Kazuki.
In: Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, Vol. 36, No. 2, 01.04.2005, p. 241-246.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Surface tension of liquid Fe-Cr-O alloys at 1823 K
AU - Lee, Joonho
AU - Yamamoto, Koji
AU - Morita, Kazuki
PY - 2005/4/1
Y1 - 2005/4/1
N2 - The surface tension of liquid Fe-Cr-O alloys has been determined by using the sessile drop method at 1823 K. It was found that the surface tension of liquid Fe-Cr-O alloy markedly decreases with oxygen content at constant chromium content, and the surface tension at a given oxygen content remains almost constant, regardless of the chromium content. When the surface tension of liquid Fe-Cr-O alloys is plotted as a function of oxygen activity, with an increase in the chromium content, the surface tension shows a much steeper decrease with respect to oxygen activity. The surface tension of liquid Fe-Cr-O alloys at 1823 K is given as follows: σ = 1842 - 279 In (1 + K OU O). Here, assuming a Langmuir-type adsorption isotherm, the adsorption coefficient of oxygen, K O(Fe-Cr), as a function of chromium content, was shown to be K O = 140 + 4.2 × [wt pet Cr] + 1.14 × [wt pet Cr] 2.
AB - The surface tension of liquid Fe-Cr-O alloys has been determined by using the sessile drop method at 1823 K. It was found that the surface tension of liquid Fe-Cr-O alloy markedly decreases with oxygen content at constant chromium content, and the surface tension at a given oxygen content remains almost constant, regardless of the chromium content. When the surface tension of liquid Fe-Cr-O alloys is plotted as a function of oxygen activity, with an increase in the chromium content, the surface tension shows a much steeper decrease with respect to oxygen activity. The surface tension of liquid Fe-Cr-O alloys at 1823 K is given as follows: σ = 1842 - 279 In (1 + K OU O). Here, assuming a Langmuir-type adsorption isotherm, the adsorption coefficient of oxygen, K O(Fe-Cr), as a function of chromium content, was shown to be K O = 140 + 4.2 × [wt pet Cr] + 1.14 × [wt pet Cr] 2.
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UR - http://www.scopus.com/inward/citedby.url?scp=17144416106&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:17144416106
VL - 36
SP - 241
EP - 246
JO - Metallurgical and Materials Transactions B
JF - Metallurgical and Materials Transactions B
SN - 0360-2141
IS - 2
ER -